Get it with all wave V9 plugins on my Macs. Im only using VST3 64bit but none will remain stable they open OK and are usable when first inserted but if you close and reopen you get a black plugin GUI and any subsequent plugin clicks instantly crashes Cubase 10 with no crash log written.
This appears to not happen to V9 wave plug users if their Waveshell.vst file is above v9.2.
All work fine in C9.5 so something in the new plugin code in C10 is causing this.
Cheers
David